I could not find the message where I said if I found a case that would hold the XL bats, that I would post the information.
In the back is a 'standard' battery case, Foster Grant Clamshell case, WIC# 464787. $7.39, found at Walgreens. Holds 4. Has survived in his back pocket for some time. Also present was a longer version, which would hold XLs, but he did not grab, as he does not use XLs. Look in the 'reading glasses' section.
In the middle is the XL case, also Foster Grant, WIC unknown. $5.25, also found at Walgreens. Holds two. Bad pic, as case partially open, but will fully close on full XL cigs (with driptubes and condoms). He cracked it, do not ask me how. Clip on other side holds lanyard nicely.
In the front is a lanyard, found in a six pack at Office Depot. Less than $6. May also be at Staples. Note the loop, not a clip. It was found in thumbdrive section, not badge section.
Hobby Lobby does have cases for pencils, if you want a 'tin' case. Also brush holders, but found nothing 'rigid'. But if you want a zip canvas folder type, they have them, several lengths.
Stradler, the drafting instrument people, make a plastic instrument kit, less than $5, but the tin case is pretty rugged, also at Staples.
EdSmart, a small teacher supply chain, has 'chalk holder' lanyards. Many patterns and colors.
Hope it helps,
of the Librum